The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Venus 100mm F2.8 2X Ultra Macro and the Sony E 30mm F3.5 Macro for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is a crucial factor to consider when comparing two lenses. Venus 100mm F2.8 2X Ultra Macro is the longer of the two lenses at 125mm. The Sony E 30mm F3.5 Macro with a length of 56mm, is 69mm shorter. Besides being longer, the Venus 100mm F2.8 2X Ultra Macro also has a larger diameter of 72mm compared to the Sony E 30mm F3.5 Macro's 62mm diameter.
The weight of a lens is equally significant as its external dimensions, particularly if you intend to handhold your camera and lens combination for extended periods. Sony E 30mm F3.5 Macro weighs 138g, 78% (500g) lighter than the Venus 100mm F2.8 2X Ultra Macro's weight of 638g.
Below you can find the dimension and weight table of the Macro Prime Lenses in Sony E Mount for size comparison purposes.
Macro Lenses in Sony E Mount for Size Comparison
Filter Threads
The Venus 100mm F2.8 2X Ultra Macro has a filter size of 67mm whereas the Sony E 30mm F3.5 Macro has a 49mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 67mm filters that we recommend you to consider for the Venus 100mm F2.8 2X Ultra Macro:
And these are the 49mm filters that we recommend for the Sony E 30mm F3.5 Macro:
Lens Mounts
Both the Venus 100mm F2.8 2X Ultra Macro and the Sony E 30mm F3.5 Macro has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony A9 III, Sony A7C Mark II and Sony A7CR.
Venus 100mm F2.8 2X Ultra Macro is also available in Canon EF , Nikon F (FX) and Pentax KAF2 mounts.
Focal Range
Venus 100mm F2.8 2X Ultra Macro is a prime lens with fixed focal lenght of 100mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
150mm.
On the other hand, the Sony E 30mm F3.5 Macro is a prime lens with fixed focal lenght of 30mm which has an effective (full-frame 35mm equivalent) focal range of 45mm when used on a APS-C / DX format camera.